#import <stdio.h>
#import <Foundation/Foundation.h>
int main(int argc, char* argv[]) {
    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
    NSLog(@"Hello world!\n");
    printf("Hei girl, I am OK.\n");
    [pool drain];
    return 0;

    // @autoreleasepool {
    //     NSLog(@"Programming is fun!");
    // }
    // 参考：https://lxblog.com/qianwen/share?shareId=ad13308c-adbe-4b17-9b93-f37cd6cb08ba
    return 0;
}